About: http://webisa.webdatacommons.org/425135506

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Blumberg says that ???even when factors such as age and income are accounted for, there are still differences between the two groups.??? Those differences mean the new data will be hard to compare with the old.
http://www.w3.org/ns/prov#wasQuotedFrom	washingtonpost.com